Results 51 to 60 of about 505 (181)
Boulders on Bennu: Low Apparent Thermal Inertia Caused by Thermal Fatigue Fractures
Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.Abstract Boulders covering the surfaces of asteroids Bennu and Ryugu have apparent thermal inertias substantially lower than their meteorite analogs. This has led to the inference that boulders on Bennu may be unlike any known meteorite. However, samples returned from Ryugu have a thermal inertia 3.5 times higher than the apparent thermal inertia ...
Catherine M. Elder
wiley +1 more source
Planetesimal Disk Evolution Driven by Embryo-Planetesimal Gravitational Scattering
The Astronomical Journal, 2003 40 pages, 9 figures, submitted to ...
openaire +2 more sources
Felsic Magmatism on Venus Generated by Crustal Recycling and Melting
Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.Abstract The observation of low viscosity lava flows and shield volcanoes on radar images, combined with X‐ray fluorescence analyses performed by Soviet landers, strongly suggests that Venus's crust is primarily basaltic. However, near‐infrared emissivity data from the Galileo and Venus Express missions indicate that crustal plateaus may be ...
Max Collinet +4 more
wiley +1 more source
Dust Clumping in Outer Protoplanetary Disks: The Interplay among Four Instabilities
The Astrophysical Journal LettersDust concentration in protoplanetary disks (PPDs) is the first step toward planetesimal formation, a crucial yet highly uncertain stage in planet formation.
Pinghui Huang, Xue-Ning Bai
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When and why formation of large bodies in circumstellar discs could take place?
EPJ Web of Conferences, 2013 We outlined the scenario of the planetary system formation, where large bodies are formed on the stage of massive discs. On this stage the whole of factors: chemical composition, chemical catalytic reactions, the disc self- gravitation, the increased ...
Stadnichenko Olga A. +2 more
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WATER FRACTIONS IN EXTRASOLAR PLANETESIMALS [PDF]
The Astronomical Journal, 2011 Accepted for publication in the Astronomical Journal, 22 pages, 4 figures, 1 ...
Jura, M., Xu, S.
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PLANETARY MIGRATION IN EVOLVING PLANETESIMAL DISKS [PDF]
International Journal of Modern Physics D, 2003 In the current paper, we further improved the model for the migration of planets introduced and extended to time-dependent planetesimal accretion disks by Del Popolo. In the current study, the assumption of Del Popolo, that the surface density in planetesimals is proportional to that of gas, is relaxed. In order to obtain the evolution of planetesimal
Yesilyurt, IS, Ercan, EN, Del Popolo, A
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3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159
Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2623-2654, November 2025.Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé +9 more
wiley +1 more source
A Population Synthesis Study on the Formation of Cold Jupiters from Truncated Planetesimal Disks
The Astrophysical JournalThe occurrence rate of giant planets increases with orbital period and turns over at a location that roughly corresponds to the snowline of solar-type stars.
Kangrou Guo +5 more
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Applied SciencesMetal species and carbonate are often found as minerals in extraterrestrial rocky bodies. Based on this, the mechanochemical-induced degradation of canonical purine and pyrimidine ribonucleosides into their corresponding nucleobases mediated by some of ...
Gustavo P. Maia +7 more
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